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17. SETTING-OUT ARC
Setting-out arc measurement can be used to find the coordinates of required points along the arc by inputting
the arc (or chord) length and offset based on the arc.
• Before performing setting-out arc, the arc must be defined.
PROCEDURE
1. Select “Set-out arc” in <Set-out arc>.
2. Set the following items.
(1) Incr:
Increment by which values can be decreased/
increased using the arrow softkeys.
(2) Arc:
Distance along the defined arc from the From
point to the required point.
(2)’Chord: Distance along the chord of the defined arc from
the From point to the required point.
(3) Offset: Distance from the required point to the position
on a curve parallel to the original defined arc. A
positive value indicates an offset arc to the right,
and a negative value indicates an arc to the left.
• Press
[CHORD]
to switch to Chord input.
•
[
]
/
[
]
: Press to decrease/increase the value by the
amount set in "Incr".
3. Press
[OK]
on the screen of step 2. The coordinate value of
the required point is calculated and displayed.
•
[REC]
: records the coordinate value as a known point data.
Recording method: "30.1 Registering/Deleting Known
• Press
[S-O]
to move to setting-out measurement of the
required point.
4. Press
{ESC}
. Continue the measurement (repeat steps
from 2).
17.2 Setting-out Arc
Chord
Arc
Offset
S e t - o u t a r c
S e t - o u t a r c
S t n . O r i e n .
D e f i n e a r c
: 1 . 0 0 0 m
S e t - o u t a r c
A r c
O f f s e t :
5 . 0 0 0
m
OK
CHORD
I n c r
P1
S e t - o u t a r c
C h o r d
O f f s e t : 0 . 0 0 0 m
:
0 . 0 0 0
m
OK
ARC
P1
: 1 . 0 0 0 m
I n c r
S e t - o u t a r c
E
N
Z
1 1 8 . 8 7 4
1 0 6 . 8 9 4
1 2 . 5 4 6
REC
S-O